Town Hall Address 100 West 4th St. Waterloo, IL 62298 United States- Monroe County Website https://www.waterloo.il.us/ Zoning 618-939-8600 208 100 West 4th St. Waterloo, IL 62298 United States Fire District 618-939-8009 510 Illinois Ave. Waterloo, IL 62298 United States Town Clerk 618-939-8643 100 West 4th St. Waterloo, IL 62298 United States Water 618-939-8600 100 West 4th St. Waterloo, IL 62298 United States Sewer 618-939-8600 100 West 4th St. Waterloo, IL 62298 United States Tax Collector 618-939-7194 100 West 4th St. Waterloo, IL 62298 United States Code Enforcement 618-939-8600 212 100 West 4th St. Waterloo, IL 62298 United States Town Hall Hours Monday - Friday: 8:00 A.M. - 4:00 P.M. County Monroe